Extractor



,D. H. BENJAMIN AND A. R. CURTIS.

EXTRACTOR.

APPLICATION FILED JUNE 8.1918.

1 423,827 Patented July 25,1922.

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DANA n. Bnnmnm, or crnynnann nnrenrs, AND ARTHUR :a. oua'rison cnnvn LAND, onro, nssrenons r0 SOLGMON n. eueenivnniivr, or cnnvnnann HEIGHTS,

OHIO.

insane? ture from washed fabrics, garments orthe like.

The object of the invention is to provide a frictionally driven extractor of simple construction, thereby enabling it to be made at low cost ina form suitable for household use, although capable of use in larger sizes and for heavier duty, if desired. A further object of the invention is to provide a frictional'ly driven extractor whose spindle is yieldingly mounted for oscillating move- Inent about a center,thereby enabling the rotating basket to center itself and spin properly, even though the load is more or less out of balance, and which oscillating mounting does not interfere with the friction drive.

Further objects of the invention are in part obvious and in part will appear more in detail hereinafter.

In the drawings, which represent one suitable embodiment of the invention, the view is a central sectional elevation.

1 represents the extractor spindle, which is a strong vertical shaft carrying at its upper end the basket 2 of common form and provided with a large number of small perforations or openings through which the moisture or liquid is discharged by centrifugal force as the basket is rotated. Said basket is usually surrounded by a cylindrical curb or casing 3 suitably supported by the stationary frame 4: and which collects and drains ofl" the water or moisture ejected from the basket during the extracting operation.

Spindle 1 is supported at its lower end in a bearing sleeve 5 having its lower end closed and preferably carrying one or several step bearing discs 6 upon which the lower end of the spindle rests. This bearing sleeve in turn is supported by an inverted cup or thimble 7 having a peripheral flange 8 provided with openings to receive bolts 9 by means of which it is rigidly secured to a a nxrnnc'ron.

Specification of Letters Patent. Patented July 25, 1922, Application filed June 8, 1.918. Serial No. 238,928.

platform 10 of the stationary frame or support. mounted for oscillating movement in the supporting cup 7, thereby enabling the spind-le and ,basket to automatically center themselves and spin when rotated, even though the load in the basket maybe more or less unbalanced. about the normal axis of the spindle. For this purpose the openingll in the top wall ofthe cup 7 is larger than the The spindle and bearingv sleeve 5 are,

spindle to allow lateral movement of the spindle therein. The sleeve 5 is also provided within the basket with a circumferentially extending flange l2vwhose. outer periphery 13 is a fairly close fit within the cylindrical wall of the cup and is curved in cross section, as shown in the drawings, about the center of oscillation, indicated at 0. Above and below theflange 12 are yielding cushions 14 of rubber or similar material, which are clamped in place to securely hold the flange 12 by theexternally threaded sleeve 15 screwed into the lower end of the cup 7. This arrangement enables the extractor spindle and basket to be slightly oscillated laterally about any, horihub is secured to rotate with the spindle,

such as by the key 17. Said drum carries a circumferentially extending friction driving ring 18 which maybe made of fibre, leather, or other suitable friction material for the purpose, or which, under some circumstances, might be made of metal. The periphery of said friction member co-operates with the flat face of a friction driving disc 19 whose rotation when in contact with the 'member 18,.drives the extractor spindle.

The driving position of the parts is illustrated in full lines in the drawings, the disc 19 being yieldingly pressed against the driving member 18. Said member 18 has its peripheral surface in substantially a horizontal plane through the center 0 before referred to, about which the extractor spindle oscillates. The periphery of the driving member 18 which contacts with the disc 19 is either specially shaped in a curve about the center of oscillation O, in the same manner as the surface 13 of the flange 12, or said peripheral surface becomes so formed or shaped by ressure or wear in use of the machine. gonsequently, oscillating movement of the spindle about the center 0 does not disturb the driving relation between iembers 19 and 18 and the driving contact therebetween is maintained under uniform pressure and with the same driving ratio regardless of any askew position assumed by the extractor spindle.

The driving disc 19 is carried by and driven by a shaft 20 connected to any suitable source of power, such as an electric 'motor or the like. Preferably the driving disc 19 is movable longitudinally of the axis of shaft 20, so as to enable it to be moved into and out of driving engagement with the member 18, and furthermore, disc 19 is preferably yieldingly pressed against member 18'to enable the parts to slip When the load is too great. For this purpose the hub 21 of the disc 19 is splined for longitudinal movement on the'shaft 20 and is provided with a collar 22 forming an annular groove 23 to receive a collar 2a with trunnions 25 connected to the arms of a yoke 26 on a lever 27 pivoted at 28 on the stationary frame. 29 represents a hand lever pivoted on the same axis 28 and connected to lever 27 through a compression spring 30, said lever having a pivoted pawl 31 co-operating with teeth on a stationary ratchet segment 32. By moving lever 29 to the right, lever 27 is also moved to the right by pressure of spring 30, thereby applying the disc 19 with yielding pressure to member 18, the parts being held in driving relation by the pawl 31 and ratchet 32.

-What we claim is:

1. In an extractor, thecombination of a stationary frame, an extractor spindle, cushioning devices between said spindle and frame adapted to permit and resiliently resist oscillation of said spindle about a center, said devices being disposed symmetrically around and above and below said center, a frictiondriven member carried by said spindle and rota-table upon a vertical axis and having a driving surface symmetrical with respect to a horizontal plane through said center, and a friction driving disc rotatable on a horizontal axis and contacting said driven member in said plane, whereby oscillation of said spindle about said center I does not disturb the driving relation.

2. In an extractor, the combination of a stationary frame, an extractor spindle, .-ushioning devices between said spindle and frame adapted to permit and resiliently resist oscillation of said spindle about a cen:

ter, said devices being disposed symmetrically around and above and below said center, a friction driven member carried by said spindle and rotatable upon a vertical axis and having a driving surface symmetrical with respect to a horizontal plane through said center, a friction driving disc rotatable on a horizontal axis and contacting said drive-n member in said plane, whereby oscillation of said spindle about said centerdoes not disturb the driving relation, and yielding means for holding said disc and driven member in contact.

In testimony whereof we affix our signatures.

DANA H. BENJANHN. ARTHUR R. CURTIS. 

